Rare diseases · Sign or symptom
Autoimmune thrombocytopenia
HP:0001973
What it means
The presence of thrombocytopenia in combination with detection of antiplatelet antibodies.
Autoimmune thrombocytopenia is causes by accelerated destruction of auto-antibody sensitized platelets in the reticular-endothelial system. Common etiologies include idiopathic thrombocytopenic purpura (ITP), Drug-induced autoimmune thrombocytopenia, and autoimmune thrombocytopenia following viral infection.
Rare diseases that can present with this22
Always100%
2Common30–79%
2Sometimes5–29%
10- Deficiency in anterior pituitary function-variable immunodeficiency syndrome
- Gamma-heavy chain disease
- Immune dysregulation-polyendocrinopathy-enteropathy-X-linked syndrome
- Immunodeficiency by defective expression of MHC class II
- Laron syndrome with immunodeficiency
- Selective IgM deficiency
- Spondyloenchondrodysplasia
- STAT1-related autoimmune enteropathy and endocrinopathy-susceptibility to chronic infections syndrome
and 2 more in this range
The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.
Part of the broader category
Also called: Idiopathic thrombocytopenia · Idiopathic thrombocytopenic purpura · Immune thrombocytopenia
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Start free with EleplanThis page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.